64seconds
' e: e" L, n" v% C
8 `1 j& Z( p/ O m0 J1 to 4 have 3floors = 48 sec
0 V4 W- M( N* otvb now,tvbnow,bttvbavg. 48/3 = 16sec
) {7 ?% q. F z' a ktvb now,tvbnow,bttvb+ u4 F' I8 K% ~/ `
4 to 8 have 4floors = 16x4
9 {& e2 `% X% V/ M" ^! T% E公仔箱論壇= 64secs |